3D and 2D

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Across
  1. 4. 3 sided 2D shape with three sides
  2. 5. A 3D figure that has 6 equal faces
  3. 6. what the amount of units a 3D shape can hold
  4. 7. what a shape is called when combined with a different shape
  5. 8. the type of area that is the sum of all 6 faces area combined
Down
  1. 1. What a triangle with 3 equal sides is called
  2. 2. 4 sided 2D shape with equal sides
  3. 3. the perimeter of a circle